i like it.
Merkabah relates to 2 tetrahedron equally intersecting and although the skill spreads in 4 directions or in square shaped form, the star effect was relative to the definition of the skill.
suggestions:
>Maybe you could add a few hues of blue and violet.
>How about trying a heart shape effect for valentine ^_^
>Make it spread in 6 directions. For a flat design of merkabah, it would look like a Star of David.
nice work blu. love it.